Science

The first NASA Space Shuttle, Columbia, at the end of its final flight on February 1st, 2003, disintegrated upon reentry, which resulted in the death of all seven members of the crew.

Ganymede's tectonic activity may have occurred in the past, but it does not occur at present.

Tears are made up of three layers.

The first man to leave his home planet was Yuri Gagarin.

Ganymede is the largest moon of Jupiter and the largest moon in the solar system.

The surface temperature of the moon is about 110 K.

Crying may help release tension.

Nicotine is a strong neurotoxin - it affects the nervous system.

Graphene has the potential to replace silicon in many applications.

Lavas are divided into three types based on their silicon dioxide (SiO2) content.